File:Jupiter MAD.jpg
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[编辑]描述Jupiter MAD.jpg |
English: Image of Jupiter taken in infrared light on the night of 17 August 2008 with the Multi-Conjugate Adaptive Optics Demonstrator (MAD) prototype instrument mounted on ESO's Very Large Telescope. This false color photo is the combination of a series of images taken over a time span of about 20 minutes, through three different filters (2, 2.14, and 2.16 microns). The image sharpening obtained is about 90 milli-arcseconds across the whole planetary disc, a real record on similar images taken from the ground. This corresponds to seeing details about 186 miles wide on the surface of the giant planet. The great red spot is not visible in this image as it was on the other side of the planet during the observations. The observations were done at infrared wavelengths where absorption due to hydrogen and methane is strong. This explains why the colors are different from how we usually see Jupiter in visible-light. This absorption means that light can be reflected back only from high-altitude hazes, and not from deeper clouds. These hazes lie in the very stable upper part of Jupiter's troposphere, where pressures are between 0.15 and 0.3 bar. Mixing is weak within this stable region, so tiny haze particles can survive for days to years, depending on their size and fall speed. Additionally, near the planet's poles, a higher stratospheric haze (light blue regions) is generated by interactions with particles trapped in Jupiter's intense magnetic field. |
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来源 |
http://www.eso.org/public/outreach/press-rel/pr-2008/images/phot-33-08-fullres.jpg Originally uploaded 16:14, 19 November 2008 (UTC) by Lars Lindberg Christensen (talk • contribs) to en:wiki. |
作者 | ESO/F. Marchis, M. Wong, E. Marchetti, P. Amico, S. Tordo |
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[编辑]This media was created by the European Southern Observatory (ESO).
Their website states: "Unless specifically noted, the images, videos, and music distributed on the public ESO website, along with the texts of press releases, announcements, pictures of the week, blog posts and captions, are licensed under a Creative Commons Attribution 4.0 International License, and may on a non-exclusive basis be reproduced without fee provided the credit is clear and visible." To the uploader: You must provide a link (URL) to the original file and the authorship information if available. | |
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宽度 | 1,730 px |
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高度 | 1,730 px |
压缩方案 | 未压缩 |
像素构成 | RGB |
方向 | 正常 |
色彩组分数 | 3 |
水平分辨率 | 72 dpi |
垂直分辨率 | 72 dpi |
数据排布 | 大块格式 |
使用软件 | Adobe Photoshop CS3 Macintosh |
文件修改日期时间 | 2008年10月2日 (四) 10:19 |
色彩空间 | 未标定 |